An invective is a form of speech or writing that attacks, criticizes, or abuses someone or something in a harsh, insulting, or vituperative manner. It is often used to express strong disapproval or anger.
Example: Jonathan Swift’s A Modest Proposal (1729) uses invective to criticize the British treatment of the Irish, though in a satirical form.
Mark Antony in Shakespeare's "Julius Caesar" (1599) : In Mark Antony's funeral speech, although disguised as subtle persuasion, he uses invective to turn the Roman crowd against the conspirators, specifically targeting Brutus and Cassius for their betrayal of Caesar.
Example: "For Brutus, as you know, was Caesar’s angel. Judge, O you gods, how dearly Caesar loved him! This was the most unkindest cut of all."